Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, MN 55455, USA.
Chem Commun (Camb). 2011 Jan 7;47(1):541-3. doi: 10.1039/c0cc02637a. Epub 2010 Nov 19.
A europium probe for the ratiometric detection of potassium in water is presented. This probe demonstrates high sensitivity, with an affinity for K(+) in the mM range, and high selectivity for K(+) over Na(+), Ca(2+), Mg(2+) and Li(+). The long luminescence lifetime of the probe and its large Stokes shift further enable accurate determination of the concentration of K(+) in complex aqueous media.
本文介绍了一种用于水中钾离子比率检测的铕探针。该探针具有高灵敏度，对钾离子的亲和力在毫摩尔范围内，对钠离子、钙离子、镁离子和锂离子具有高选择性。探针的长荧光寿命和大斯托克斯位移进一步使其能够准确测定复杂水介质中钾离子的浓度。
